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Bryozoa Fossil

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INFORMATION
TIME SCALE
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PRODUCT INFORMATION
Listing for one bryozoan specimen

 

NAME: Ectoprocta (meaning ‘butt outside’)

LOCATION: Morocco

AGE: 385 million years (Devonian)

Bryozoans are a group of minute aquatic animals just barely visible to the naked eye. Their fossils are among the most common in the world, especially in parts of North America where their broken skeletons can form entire limestone beds.

There are nearly 6,000 living species and over 15,000 extinct species dating back at least 480 million years. These species vary in appearance and behavior but, generally speaking, bryozoan colonies consist of many semi-autonomous, hermaphroditic clones called zooids that build coral-like structures of calcium carbonate to live within.

This fossil is a branch of one such structure. If you look closely, you may notice small pits in the surface. Each pit was once home to a single zooid. They were attached to the structure and survived by feeding on microscopic organisms floating by.

After the Permian/Triassic event, when 96% of marine life went extinct, enough bryozoans survived to recover in the Mesozoic and become as successful as before.

Size: .5"-2" (Larger specimens will be prioritized first)

TIME SCALE

This table contains the geological time periods of the past 2.5 billion years on Earth to aid in understanding age immense age of these fossils.

(Ma = Mega-annum = 1,000,000 years)
EON ERA PERIOD EXTENT (Ma) DURATION (Ma)
Phanerozoic Cenozoic Quaternary 2.588–Present 2.588+
Neogene 23.03–2.588 20.4
Paleogene 66.0–23.03 42.9
Mesozoic Cretaceous 145.5–66.0 79.5
Jurassic 201.3–145.0 56.3
Triassic 252.17–201.3 50.9
Paleozoic Permian 298.9–252.17 46.7
Carboniferous 358.9–298.9 60
Devonian 419.2–358.9 60.3
Silurian 443.4–419.2 24.2
Ordovician 485.4–443.4 42
Cambrian 541.0–485.4 55.6
Proterozoic Neoproterozoic Ediacaran 635.0–541.0 94
Cryogenian 850–635 215
Tonian 1,000–850 150
Mesoproterozoic Stenian 1,200–1,000 200
Ectasian 1,400–1,200 200
Calymmian 1,600–1,400 200
Paleoproterozoic Statherian 1,800–1,600 200
Orosirian 2,050–1,800 250
Rhyacian 2,300–2,050 250
Siderian 2,500–2,300 200
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Bryozoa Fossil

Bryozoa Fossil

$2.00
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